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<div class="title">utils.c</div>  </div>
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<a href="utils_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*********************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">utils.c &lt;--- utils.h</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> ********************************/</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="utils_8h.html">utils.h</a>&quot;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"><a class="line" href="utils_8h.html#af2283b6b177adb88ebca21c895463d2e">    5</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="utils_8c.html#af92f2ad1e517758eabb3ab14b4d7c4fd">halt</a> (<span class="keyword">const</span> <span class="keywordtype">char</span> * funcname, <span class="keyword">const</span> <span class="keywordtype">char</span> * msg)</div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;{</div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;  <span class="keywordtype">char</span> * message;</div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;  message = (<span class="keywordtype">char</span> *) malloc (strlen(funcname)+strlen(msg)+1);</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;  memcpy(message, funcname, strlen(funcname));</div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;  memcpy(&amp;message[strlen(funcname)], msg, strlen(msg));</div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;  perror(message);</div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;  exit(EXIT_FAILURE);</div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;}</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno"><a class="line" href="utils_8h.html#affec6424fefa28d254cbfdef9b0e0f27">   15</a></span>&#160;<a class="code" href="structtokenized__t.html">tokenized_t</a> * <a class="code" href="utils_8c.html#affec6424fefa28d254cbfdef9b0e0f27">tokenize</a> (<span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keywordtype">string</span>)</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;{</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;  <span class="keywordtype">int</span> total_length;</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;  <span class="keywordtype">int</span> token_size;</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;  <span class="keywordtype">int</span> token_number = 0;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;  <span class="keywordtype">int</span> memory = 0;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;  <span class="keywordtype">int</span> i, j;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;  <span class="keywordtype">char</span> * buffer;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;  <a class="code" href="structtokenized__t.html">tokenized_t</a> * tokenized;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;  total_length = strlen(<span class="keywordtype">string</span>);</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;  memory = <span class="keyword">sizeof</span>(<a class="code" href="structtokenized__t.html">tokenized_t</a>);</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;  i = 0;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;  tokenized = (<a class="code" href="structtokenized__t.html">tokenized_t</a>*) malloc (memory);</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;  tokenized-&gt;<a class="code" href="structtokenized__t.html#aff037cf9f91fa5f60d5cbecef00ec20d">num_tokens</a> = 0;</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;  <span class="keywordflow">while</span>(i &lt; total_length)</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    {</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;      token_size = 0;</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;      <span class="keywordflow">for</span> (j = i; j &lt; total_length; j++)</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    {</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;      <span class="keywordflow">if</span> (iscntrl(<span class="keywordtype">string</span>[j]) || isspace(<span class="keywordtype">string</span>[j]))</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;        {</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;          <span class="keywordflow">if</span>(token_size &gt; 0)</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        {</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;          <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        }</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;          <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        i = j;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;          }</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;        }</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;      <span class="keywordflow">else</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;        {</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;          token_size++;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        }</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    }</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;      buffer = (<span class="keywordtype">char</span> *) malloc (<span class="keyword">sizeof</span>(<span class="keywordtype">char</span>) * token_size+1);</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;      <span class="keywordflow">for</span> (j = 0; j &lt; token_size; j++)</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    {</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;      buffer[j] = <span class="keywordtype">string</span>[i];</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;      i++;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    }</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;      buffer[token_size] = <span class="charliteral">&#39;\0&#39;</span>;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;      token_number++;</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;      memory = <span class="keyword">sizeof</span>(<span class="keywordtype">char</span> *) * (tokenized-&gt;<a class="code" href="structtokenized__t.html#aff037cf9f91fa5f60d5cbecef00ec20d">num_tokens</a>+1);</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;      tokenized-&gt;<a class="code" href="structtokenized__t.html#a03e703035f4651fb1569c93e588349c1">tokens</a> = (<span class="keywordtype">char</span> **) realloc (tokenized-&gt;<a class="code" href="structtokenized__t.html#a03e703035f4651fb1569c93e588349c1">tokens</a>, memory);</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;      memory = <span class="keyword">sizeof</span>(char) * (token_size + 1);</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;      tokenized-&gt;<a class="code" href="structtokenized__t.html#a03e703035f4651fb1569c93e588349c1">tokens</a>[tokenized-&gt;<a class="code" href="structtokenized__t.html#aff037cf9f91fa5f60d5cbecef00ec20d">num_tokens</a>] = (<span class="keywordtype">char</span> *) malloc (memory);</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;      memcpy(tokenized-&gt;<a class="code" href="structtokenized__t.html#a03e703035f4651fb1569c93e588349c1">tokens</a>[tokenized-&gt;<a class="code" href="structtokenized__t.html#aff037cf9f91fa5f60d5cbecef00ec20d">num_tokens</a>], buffer, token_size + 1);</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;      tokenized-&gt;<a class="code" href="structtokenized__t.html#aff037cf9f91fa5f60d5cbecef00ec20d">num_tokens</a> = token_number;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;      i++;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    }</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;  <span class="keywordflow">return</span>(tokenized);</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;}</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;</div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="utils_8h.html#ade391357b11fa32f4d53c267daf009e8">   78</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="utils_8c.html#ade391357b11fa32f4d53c267daf009e8">zero_pad</a>(<span class="keywordtype">char</span> * buffer, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> number, <span class="keywordtype">int</span> len)</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;{</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;  <span class="comment">//allocate a buffer of length len</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  buffer = (<span class="keywordtype">char</span> *) realloc(buffer, <span class="keyword">sizeof</span>(<span class="keywordtype">char</span>)*len);</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;  <span class="keywordtype">int</span> i = 0, j = 0;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;  <span class="keywordtype">int</span> remainder;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> quotient = number;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;  <span class="keywordtype">int</span> real_len = len;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;  <span class="keywordtype">char</span> digit;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;  <span class="keywordflow">while</span> (quotient &gt; 0)</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;    {</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;      <span class="comment">//if (quotient == 0) break;</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;      remainder = quotient%10;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;      quotient = quotient/10;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;      digit = (char) (remainder + 48);</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;      i++; <span class="comment">//i is the number of converted digits</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;      <span class="keywordflow">if</span> (i &gt; real_len)  <span class="comment">//if we converted more digits than expected...</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    {</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;      <span class="comment">//...realloc buffer, shift chars right</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;      real_len++;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;      buffer = (<span class="keywordtype">char</span> *) realloc (buffer, <span class="keyword">sizeof</span>(<span class="keywordtype">char</span>)*real_len);</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;      <span class="keywordflow">for</span> (j = real_len-1; j &gt; 0; j--)</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        {</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;          buffer[j] = buffer[j-1];</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        }</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    }</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;      buffer[real_len - i] = digit;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    } </div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;  <span class="comment">//finally, do the padding</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;  <span class="keywordflow">for</span> (j = 0; j &lt; (real_len - i); j++)</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    {</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;      buffer[j] = <span class="charliteral">&#39;0&#39;</span>;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    }</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;  <span class="keywordflow">return</span> (real_len);</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;}</div>
<div class="ttc" id="utils_8c_html_af92f2ad1e517758eabb3ab14b4d7c4fd"><div class="ttname"><a href="utils_8c.html#af92f2ad1e517758eabb3ab14b4d7c4fd">halt</a></div><div class="ttdeci">void halt(const char *funcname, const char *msg)</div><div class="ttdef"><b>Definition:</b> <a href="utils_8c_source.html#l00005">utils.c:5</a></div></div>
<div class="ttc" id="utils_8c_html_ade391357b11fa32f4d53c267daf009e8"><div class="ttname"><a href="utils_8c.html#ade391357b11fa32f4d53c267daf009e8">zero_pad</a></div><div class="ttdeci">int zero_pad(char *buffer, unsigned long int number, int len)</div><div class="ttdef"><b>Definition:</b> <a href="utils_8c_source.html#l00078">utils.c:78</a></div></div>
<div class="ttc" id="utils_8c_html_affec6424fefa28d254cbfdef9b0e0f27"><div class="ttname"><a href="utils_8c.html#affec6424fefa28d254cbfdef9b0e0f27">tokenize</a></div><div class="ttdeci">tokenized_t * tokenize(const char *string)</div><div class="ttdef"><b>Definition:</b> <a href="utils_8c_source.html#l00015">utils.c:15</a></div></div>
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<div class="ttc" id="structtokenized__t_html_a03e703035f4651fb1569c93e588349c1"><div class="ttname"><a href="structtokenized__t.html#a03e703035f4651fb1569c93e588349c1">tokenized_t::tokens</a></div><div class="ttdeci">char ** tokens</div><div class="ttdef"><b>Definition:</b> <a href="utils_8h_source.html#l00010">utils.h:10</a></div></div>
<div class="ttc" id="structtokenized__t_html_aff037cf9f91fa5f60d5cbecef00ec20d"><div class="ttname"><a href="structtokenized__t.html#aff037cf9f91fa5f60d5cbecef00ec20d">tokenized_t::num_tokens</a></div><div class="ttdeci">int num_tokens</div><div class="ttdef"><b>Definition:</b> <a href="utils_8h_source.html#l00011">utils.h:11</a></div></div>
<div class="ttc" id="structtokenized__t_html"><div class="ttname"><a href="structtokenized__t.html">tokenized_t</a></div><div class="ttdef"><b>Definition:</b> <a href="utils_8h_source.html#l00008">utils.h:8</a></div></div>
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